/Engine/Source/Developer/AssetTools/Public/AssetViewUtils.h
Returns true if the supplied folder name can be used as part of a package name
namespace AssetViewUtils { bool AssetViewUtils::IsValidFolderName ( const [FString](API\Runtime\Core\Containers\FString) & FolderName, [FText](API\Runtime\Core\Internationalization\FText) & Reason ) }